// 业务逻辑中间件
const path = require('path')
const fileUtils = require('../utils/file_utils')
module.exports = async (ctx, next) => {
  // 获取请求路径
  const url = ctx.request.url
  console.log(url)
  let filePath = url.replace('/api','')
  filePath = '../data' + filePath + '.json'
  filePath = path.join(__dirname,filePath)
  // 读取文件内容
  try {
    const ret = await fileUtils.getFileJsonData(filePath)
    ctx.response.body = ret
  } catch (error) {
    const errMsg = {
      message: '读取文件内容失败，文件资源不存在',
      status: 404
    }
    ctx.response.body = JSON.stringify(errMsg)
  }
  await next()
}